Fastener.



M. F. CARR.

FASTENER. APPLICATION FILED AuG.23. 1917.

Patented Apr. 15,1919.,I

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MOSES F. CARR, OF NEWTON, MASSACHUSETTS, ASSIGNOR T CARE'FASTENERCOMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

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Specification of Letters Patent.

Patented apr. ia, raie..

Application led August 23, 1917. Serial No. 187,802.

To all whom z' may concern.

Be it known that I, MOSES F. CARR, a citizen of the United States, anda'resident ofA Newton, in county of Middlesex, Commonin fasteners, moreparticularly, though-not exclusively, to improvelnents in snap'fasteners in which separation of two engaging elements can of one ofsaid elements in one direction only.

Referring to' the drawings Figure 1 is a front elevation of la fastenerdevice constituting a preferred form of one embodiment of my invention;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a rear elevation of a portion of the socket of the fastenershowing in detail a preferred jaw construction for use in connectionwith my invention. Referring to the drawings of the preferred embodimentof my invention, I have shown a stud 4 having a head 5 ada ted to enterthe socket and to be engaged y jaw means herein typified by the springjaws and 7. The spring jaws 6 and 7 are preferably, as shown, formed ofa single piece of wire held in a socket comprising a front plate 8 and ahack late 9. The fastener is shown with the stud) 4 attached to fabric10 b a back stud plate 11 held by prongs 12 in tlie usual manner. Thesocket is preferably attached to fabric 13 by means of a back plate 14and pr'ongs 15, said prongs being preferably integral with the frontplate 8.

The jaw elements 6 and 7 preferably extend transversely of the socket.The stud 4 is provided with an unsymmetrical shoulder providing anabrupt shoulder 16 for engagement with the jaw 6 and a comparativelysloping shoulder 17 forengagement with the jaw 7. The aperture throughthe plates 9 and 14 is preferablv so shaped that the'socket may betipped relative to the stud until the position of the stud relative tothe fastener is as shown in dotted lines in Fig. 2, thereby permittingthe spring 7 to be be effected by tipping movement pushed down by thesloping shoulder 17 until the shoulder 16 is in position to disengagefrom the jaw 6. The aperture through theplates 9' and 14 is preferablysuch as to prevent any considerable tipping movement of the socketrelative to the stud in any direction other .than that above described.The head of therstud is preferably rounded, as shown, so that the-studmay be entered in the socket by a straight rectilinear movement, thehead 5 of the stud 4 crowding the jaws 6, 7 apart so that the-head ofthestud' can -pass between them.

Separation of stud and fastener by direct rectilinear movement isprevented by the engagement of the abrupt shoulder 16 with the )aw 6.Separation of stud and socket by tipping movement in a plane parallelwith the Jaws is prevented by the shape of the aperture through whichthe stud passes. Thusa stud and socket fastener separable by tippingmovement in one direction only is provided. p While I have shown anddescribed one embodiment of my invention, it is obvious that changesinvolving omission, alteration, substitution and reversal of parts, maybe made without departing from the scope of m Y invention, which is bestdefined in the fo lowing claims.

Claims:

1. A stud and socket fastener comprising, -in combination, a stud havinga head and providing a reduced portion rearwardly ofy said head, saidreduced portion presenting an abrupt shoulder at one side and a lessabrupt shoulder .on the opposite side; a socket providing stud-engaglnmeans extending transversely thereof an means permitting separation ofsaid stud and socket by initial tippin movement in a directiontransverse to sai stud engaging means.

2. Astud and socket fastener comprising,

` in combination, a stud, a socket, jaw means carried by said socket forengagement with a reduced portion of said stud and means 'permittingseparation of said stud and socket on an initial tipping movement ofsaid socket relative to said stud in one direction transverse to saidjaw means only.

3. A stud and socket fastener comprising, in combination, a stud, asocket, two resilient jaws extending tnansversely of said socket,dissimilar notches in said stud for engagement with said jaws, one ofsaid notches providing an abrupt shoulder, the other of said notchesprovidinga less abrupt shoulder and a casinfg permitting relativetipping movement o tion transverse to said jaws and only in an arc aboutthe jaw-engaging notch having the abrupt shoulder.

4. A stud and socket fastener comprising, in combination, a socket, tworesilientjaws extending` transversely of said socket, an unsymmetricalstud for engagement with said jaws, one side of said stud providing anotch having an abrupt shoulder and the other side of said studproviding a notch having a less abrupt shoulder, said socket having anelongated opening therethrough permitting relative tipping movement ofsaid stud and said socket in a direction providing for disengagement ofone of said jaws from the notch providing the less abrupt shoulder. l I

5. A stud and socket fastener providing a stud having a head and a neck,and a socket having parallel jaws, said socket being formed' to permitrelative tipping movement of said stud and socket only in a directiontransverse to said jaws. 6. A stud and socket fastener providin a studhaving a head and a neck, and a soc et having j aw means, said socketbeing formed to permit relative tipping movement of said stud and socketonly in a direction transverse to said jaw means.

7. In a stud and socket fastener a stud having a shank cut away toprovide a head having opposed shoulder portions one of which is abruptand the other less abrupt,

a socket having an opening to receive the stud arranged to bear on andsupport the shank thereof on three sides, a sprin jaw at the fourth sideengaging said a rupt said stud and socket only in a direcj pull. A

8. A fastener as defined in claim 7 wherein the means engaging said lessabrupt shoulder is a spring jaw.

9. In a stud and socket fastener a stud cut away to provide an abruptshoulder at one side thereof, a. socket having an openi to receive saidstud adapted to bear on support same on three sides, a spring jaw atthev fourth side engaging said abrupt shoulder, one of the elementspresenting o posite said fourth side an inclined cam-li e surface alongwhich the other 'may ride to permit the socket and the stud to approachat said fourth side by tipping movement.

10. In a stud and socket fastener a stud having a shank 4 cut away toprovide a head having'opposed shoulder portions, a socket having Ianoblong opening-receiving said shank, a spring jaw crossing saidopeningand adapted to rest on one of said shoulder portions, said portion beingabrupt whereby to resist separation of stud and socket if said head istilted toward said jaw, said jaw tending to thrust said stud downwardlyin the opening to position the same against the sides thereof forresistance to substantial lateral 'deflection and to seat the opposedshoulder against an engaging abutment at the bottom thereof, theengagement being such as to permit tipping of the head toward saidabutment whereby to alter the angle of the abrupt shoulder aforesaid topermit the spring jaw t0 move along the same and thence to permitseparation of the fastener. In testimony whereof, I have signed'my nameto this specification.

Moses 15. CARR.

